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Think you have loud neighbors?

There's a street not far from my driveway entrance that the folks down there do burnouts on our road. The pinstriping is right in front of my driveway making it look like its me. I hear them now and then. My wife hates it. I don't mind it. There's one rig there that really sounds good with the waste gates going. I can't tell you how many times I've clamored down the driveway in my RedWings Loggers to see what it is, only to see smoky pavement the vehicle long gone. :laughing:
 
I see your jet engine and raise you a pulse jet:



This is what the guy across the street should wheel out in answer to this guy's jet engine. :evil:
 
I hope the neighbor kid gets his 2 stroke dirt bike fixed.i love the sound of a skilled rider at a distance.
 
We are the loud neighbors here. Loud kids, barking dogs, 2 loud diesel trucks.

That is until certain neighbors start their domestic violence shit. That can get crazy:eek:


Smallish neighborhood. Most of us have 2.6 acres.
 
Add said:
How is that cart not flying through the wall of his garage?
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IGT said:
Not all gas turbines are creating thrust out the exhaust
Most are turning a shaft from the hot section
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I think the answer is that it's not spun up past idle. wiki says the engine makes 1,000 lbf of thrust at static (sitting on a cart in your driveway).

Of more concern is that there is no shielding around the compressor section in a residential neighborhood, and no backstop behind the exhaust. Even if it is idling, conceivably something could be thrown out axially or radially.

I love it but in a residential neighborhood, this is sketch as fuck.

When they test jets, they chain them to whatever. Navy uses a special cart firing off the back of the aircraft carrier that is strapped down to large padeyes much heavier than normal aircraft tie-downs.



17puovbt1qwryjpg.jpg


You can see the normal padeye under the tech's butt there, and the one used for testing aircraft is a heavy piece of steel coming up out of what is presumably the reinforced section of the deck. Which means the padeyes the Navy trusts to tie down F-18s in a hurricane are not the ones they feel are sufficient to hold a jet engine at full onions.
 
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evernoob said:
I think the answer is that it's not spun up past idle. wiki says the engine makes 1,000 lbf of thrust at static (sitting on a cart in your driveway).

Of more concern is that there is no shielding around the compressor section in a residential neighborhood, and no backstop behind the exhaust. Even if it is idling, conceivably something could be thrown out axially or radially.
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Very slim chance of a blade getting out of the compressor case, a blade usually corn cobs the whole engine axially.

Whole compressor wheel maybe but after many hours and cycles. If vibration monitoring in place slim chance.
Over speed is usually the cause of catastrophic failure and if you run any turbine without over speed protection you should only be allowed to have a Briggs and Stratton 3.5
This guy has some experience or he would of never got it started
 
IGT said:
Very slim chance of a blade getting out of the compressor case, a blade usually corn cobs the whole engine axially.

Whole compressor wheel maybe but after many hours and cycles. If vibration monitoring in place slim chance.
Over speed is usually the cause of catastrophic failure and if you run any turbine without over speed protection you should only be allowed to have a Briggs and Stratton 3.5
This guy has some experience or he would of never got it started
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I make the same assumption you do: the guy has some experience. But experience to get it started and experience to properly do things are two different things, as we know. I assume he has experience enough to operate the machine properly.

The rest of your post is this rather meaningless.

Aircraft stuff, especially jet turbines, are reliable because:
  • metallurgy
  • inspections
  • maintenance
If a dodge slant-6 has a manufacturing defect on one piston, and a chunk of it falls off and lands in the bottom of the pan, it might still run. For decades. That's because the window between the operation of the machine and it's failure point is rather large, it was designed to be that way.

A jet is the opposite. The window between what the jet operates at and what is failure is smaller, by nature. That window is maintained by more precise metal properties. This is all well-documented in jet development history.

Then there are the penalties. A slant-6 might run 4500 rpm if you held it to the floor and blew ether in it. The J44 runs 15,000 RPM according to wiki. That means the penalties are MORE than 3x as high as everyone here knows, it's not a linear relationship.

A rod slung out of the inside of a heavy iron casting at 4500pm is a lot less hazardous than a compressor blade flung out of a sheet-metal housing at 15,000 RPM. Energy is .5MV^2, velocity matters more, and the housing is smaller.

A steam traction engine requires a boiler inspection. I wouldn't even be around one that wasn't inspected, and there are criminal penalties for operating boilers that aren't inspected. In some cases, you can't cross state lines with vintage steam engines without getting certified.

What is the equivalent for jet turbine engines?

You are clearly very comfortable with them, and I'm not, but you're also ignoring massive differences between what this thing is and what we're normally familiar with.

Jet engines are safe and reliable because they are maintained carefully. So again, I think this is hinky as fuck.

How do I know that one blade of that machine hasn't been pitted near the root and is just waiting to shear off as soon as he throttles up? I'm not comfortable with his or your assurance otherwise unless I see objective proof that it's certified somehow, which it's not.
 
There's different kinds of loud neighbors, that, I'd be totally fine with honestly. Then again, during daylight hours I'm the loud dickhead neighbor that's constantly running dirt bikes up and down the block or grinding/hammering on shit on the weekend.

My loud neighbors like to throw big mexican parties and blast the same four or five songs so loud I can hear them clearly inside my house from a block away till 2-3 in the morning, that annoys me more than any engine.
 
TrikeKid said:
There's different kinds of loud neighbors, that, I'd be totally fine with honestly. Then again, during daylight hours I'm the loud dickhead neighbor that's constantly running dirt bikes up and down the block or grinding/hammering on shit on the weekend.

My loud neighbors like to throw big mexican parties and blast the same four or five songs so loud I can hear them clearly inside my house from a block away till 2-3 in the morning, that annoys me more than any engine.
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I use to hate that shit when I lived in brown town, not the worst neighbors as they didn’t give half a shit about what I was doing but every Friday and Saturday you can count on listening to uumpa looompa music till 3am then picking up 20 empty modelo cans in your lawn (That didn’t go in my trash, their front porch or unlocked vehicle on their property) when you go for the ‘fuck you’ mow at 5:30 am.
 
Fullsize80cherokee said:
I use to hate that shit when I lived in brown town, not the worst neighbors as they didn’t give half a shit about what I was doing but every Friday and Saturday you can count on listening to uumpa looompa music till 3am then picking up 20 empty modelo cans in your lawn (That didn’t go in my trash, their front porch or unlocked vehicle on their property) when you go for the ‘fuck you’ mow at 5:30 am.
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These ones at least don't make a mess, they're just obnoxiously loud and always play the "No habla" game if you say anything to them about anything. Cops here habla just fine so that's who deals with them when they get out of hand.
 
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